The 143 knots is actually up a knot from when we first got the plane

snip

I think this is attributing way more precision to your measurements than
is
warranted by your technique.

Yeah, probably so. Although GPS groundspeed as measured by flying
reciprocal directions is about as accurate as I can get, without going to
extreme gymnastics.

Still, 143 knots ain't half bad for a stiff-gear Cherokee.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"